Sikagard H 303t is a water-based, transparent, deep-penetrating silane hydrophobic agent. It provides long-term protection against water ingress, salt corrosion, freeze-thaw damage and weathering for concrete and porous inorganic substrates. It keeps the original appearance of surfaces, features good air permeability, environmental friendliness and easy application, and is widely used for bridges, building facades, parking lots and marine engineering structures.
Core Advantages
- Deep penetration: Penetrates several millimeters into substrates instead of forming a surface film, delivering excellent wear resistance and long service life.
- Vapour-permeable without blistering: Allows water vapor to escape while repelling liquid water, ideal for damp substrates and subsequent maintenance.
- Colourless with no surface alteration: Causes barely any change to the colour and gloss of concrete, suitable for exterior walls, landscape structures and heritage concrete works.
- Chloride & salt corrosion resistance: Effectively inhibits penetration of de-icing salts and seawater chlorides, protecting steel reinforcements and extending structural service life.
- Freeze-thaw & weathering resistance: Reduces freeze-thaw damage, efflorescence, moss growth and surface staining.
- Eco-friendly & safe: Water-based, low VOC, non-flammable and low-odour. Can be applied on damp surfaces.
Typical Application Scenarios
- Transportation Infrastructure
- Bridges: Bridge decks, piers, bent caps, crash barriers
- Highways & municipal works: Concrete pavements, central barriers, toll islands
- Parking lots: Floors, ramps and exterior walls of multi-storey parking buildings
- Concrete exterior walls, balconies, parapets and roofs
- Fair-faced & decorative concrete (color retention, anti-efflorescence and anti-moss)
- Cooling towers, chimneys, water towers and stadium stands
- Water Conservancy & Port Projects
- Wharves, revetments and marine concrete structures (resistant to seawater salt corrosion)
- Channels, culverts and tunnel linings (anti-seepage and freeze-thaw resistance)
- Other Substrates
Hydrophobic protection for water-absorbent inorganic materials including autoclaved lime-sand bricks, porous bricks, natural stone (granite / sandstone) and mineral plaster.
